CN202302146U - Safety valve for electric water heater - Google Patents
Safety valve for electric water heater Download PDFInfo
- Publication number
- CN202302146U CN202302146U CN2011203888810U CN201120388881U CN202302146U CN 202302146 U CN202302146 U CN 202302146U CN 2011203888810 U CN2011203888810 U CN 2011203888810U CN 201120388881 U CN201120388881 U CN 201120388881U CN 202302146 U CN202302146 U CN 202302146U
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- valve body
- sealing gasket
- leaks
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- support
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Abstract
The utility model discloses a safety valve for an electric water heater, wherein a valve body comprises a main valve body, a water inlet at the right side of the main valve body, a water outlet at the left side of the main valve body, and an outward-leakage valve body at the upper end of the main valve body; the main valve body is communicated with the outward-leakage valve body via an outward-leakage through hole; a water-inlet and inward-leakage control assembly is disposed in the main valve body; and an outward-leakage control assembly is disposed in the outward-leakage valve body. According to the safety valve for an electric water heater disclosed by the utility model, a compression cap is additionally arranged on an outward-leakage compression cap, change on the displacement of a spring is avoided by preventing a compression nut from loosening via a double-nut interlocking structure, thus the accuracy of the spring is improved and the service life of the spring is prolonged; an outward-leakage spring uses a spiral spring with a conical section, thus being high in dimensional accuracy, more accurate in pressure relief and longer in life; an adjusting nut in the valve body has a function of a filter screen and is capable of effectively filtering impurities and avoiding the hidden trouble of water leakage; a step height designed on an outward-leakage sealing seat is limited to cause the amount of every compression to be finite, thus the service life of a sealing pad is greatly prolonged.
Description
Technical field
The utility model relates to hot-water heating device technical field, is specifically related to safety valve.
Background technique
No. 200320108077.8 utility model patents of China disclose electric water heater safety valve; In conjunction with shown in Figure 1; Its working principle is: when normally intaking; Water supply arrives 200 places in the safety valve from the resistance that valve inleting water mouth 100 overcomes water check spring into, gets into water heater through valve body water outlet 300 places again; During normal heating; The water heater pressure inside slowly raises; When water heater internal pressure during greater than valve inleting water mouth 100 pressure, in let out assembly 400 reverse openings, the inner unnecessary pressure of water heater from valve body water outlet 300 reverse through in let out assembly 400 and finally flow back to valve inleting water mouth 100; When the pressure at two ends difference less than interior when letting out the module sets force value, in let out assembly 400 and close and promptly separate hot and cold water; If it is too fast to heat in water heater inside; In let out assembly and can not release unnecessary pressure fully, pressure sharply rose and met or exceeded the assembly 500 that leaks when safety valve leaks the module sets force value and open this moment, assembly pressure release simultaneously leaked in this moment; The unnecessary pressure of part finally is released from outer drain port 600 through the assembly that leaks; Reduce to the module sets force value that the leaks assembly 500 that leaks when following when the water heater internal pressure and close, let out assembly in this moment and continue to release unnecessary pressure, when water heater internal pressure and valve inleting water mouth 100 place's pressure reduction less than interior when letting out the module sets force value; In let out assembly 400 and close, separate hot and cold water.
The above-mentioned patented technology part that still comes with some shortcomings; Mainly comprise: in a. using process, the clamping cap in the assembly that leaks is easy to get loose: the elastic force of spring is changed, cause the water outlet end of the safety valve pressure that leaks to change thereupon; Stability descends, and generation is leaked; B. mostly the spring that leaks is cylindrically coiled spring, and the user is easy to cause spring permanent distortion, elastic force value to descend, produce then and leak in use for some time because the hot water refluence is bigger to the stress corrosion of cylindrically coiled spring; C. the impurity in the water is easy to be bonded on the pressure release sealing surface, has influenced the working life of safety valve; D. piston element to-and-fro motion in the assembly leaks; Step through the sealing seat that leaks cooperates with sealing gasket, the switch passage that leaks, and the step of existing technology is too outstanding; Though can play sealing effect; But very easily make defectives such as sealed member cracks, breakage, cause sealing state to change, generation is leaked.
The model utility content
The utility model is intended to improve the performance and the stability of safety valve, prolongs the working life of safety valve, and a kind of new safety valve structure is provided.The technological scheme that realizes above-mentioned purpose is following:
A kind of electric water heater safety valve, comprise valve body, water inlet and in let out control unit, control unit leaks; Valve body comprises the water intake on main valve body, main valve body right side, the water outlet in left side and the valve body that leaks of upper end, and main valve body is communicated with through the through hole that leaks between valve body with leaking, water inlet with in let out control unit and be arranged in the main valve body; The control unit that leaks comprises piston rod support, piston rod, handle, the pressure spring that leaks, the sealing gasket support and the sealing gasket that leaks leak; Piston rod support outer rim is fixedly installed on the open upper end place of the valve body that leaks; Piston rod is located in the piston hole of piston rod support, and the piston rod upper end is connected with handle, and the lower end is connected with the sealing gasket support that leaks; The sealing gasket that leaks is arranged on the sealing gasket support lower end surface of leaking, and the sealing gasket that leaks is relative with the said through hole that leaks; It is characterized in that: the control unit that leaks also comprises first clamping cap and second clamping cap; Be positioned at above piston rod support below, the sealing gasket support that leaks; Be threaded with the valve interior wall that leaks respectively; Second clamping cap is replaced in the said pressure spring upper end of leaking, and the sealing gasket support that leaks is replaced in the lower end, offers outer drain port on second clamping cap and the valve body that leaks between the sealing gasket support of leaking.
The said pressure spring that leaks is awl cross section helical spring.
The divulge a secret boss height restriction of packing of the sealing seat outward that leaks of the said through hole of leaking is in the 0.2mm.
Said water inlet with in let out control unit comprised water support, water inlet check spring, water inlet sealing gasket support, water inlet sealing gasket, in let out thimble and in pressure release power spring; Cross the annular stop sheet of crossing water pond and right side that the water support has vertical main valve body inwall; Cross the water pond outer rim and be connected, cross on the water pond and offer water passage hole with the main valve body inner thread; The water inlet sealing gasket is arranged on its right end face of sealing gasket support; Sealing gasket support and water inlet sealing gasket were arranged between water support and the water intake movably; The movable left scope of ends restrict water inlet sealing gasket support of annular stop sheet; Water intake is provided with seal boss in main valve body, water inlet check spring one end is arranged in the inside groove of annular stop sheet, and the other end is replaced the sealing gasket support; In let out thimble and have thimble cap and thimble rod, collude sealing edge in its thimble cap has, thimble rod is located in the center hole of sealing gasket support and water inlet sealing gasket, the thimble cap is positioned at into water sealing gasket right side, in collude sealing edge towards the water inlet sealing gasket; Thimble rod is provided with spring card slot, and interior pressure release power spring housing is located on the thimble rod, and the one of which end snaps in said draw-in groove, and the other end is replaced into water sealing gasket support left end face.
Said water inlet with in let out control unit and also comprise filter screen, be arranged on a said side of crossing the annular stop sheet of water support.
The beneficial effect of the utility model is: let out outside (1) increases a clamping cap again on the clamping cap, utilizes the double nut interlocking structure to prevent that gland nut is loosening and avoids spring displacement to change; Thereby improving the spring precision increases the service life; (2) spring that leaks adopts awl cross section helical spring dimensional accuracy higher, and pressure release is more accurate, and the life-span is longer; (3) adjusting nut band filter screen function in the valve body, effectively impurity screening avoids producing the hidden danger of leaking; (4) the leak shoulder height that designs above the sealing seat limits in the 0.2mm, makes each decrement limited, thus the working life of having improved sealing gasket greatly.
Description of drawings
Fig. 1 is the schematic cross-section of a kind of safety valve of the prior art.
The schematic cross-section of the safety valve that Fig. 2 provides for the utility model embodiment.
Fig. 3 is the divulge a secret enlarged view at packing place of Fig. 2 at home and abroad.
Embodiment
The electric water heater safety valve that present embodiment provides comprise generally valve body, water inlet and in let out control unit, control unit leaks.Particularly, as shown in Figure 2, valve body includes integrated water intake 11, water outlet 12, main valve body 13 and the valve body 14 that leaks; Water inlet with in let out control unit comprised water support 21, water inlet check spring 22, water inlet sealing gasket support 23, water inlet sealing gasket 24, in let out thimble 25 and in pressure release power spring 26; The control unit that leaks comprises piston rod support 31, piston rod 32, handle 33, first clamping cap 34, second clamping cap 35, the pressure spring 36 that leaks, the sealing gasket support 37 and the sealing gasket 38 that leaks leak.
Continuation is referring to Fig. 2, and main valve body 13 right-hand members are water intake 11, and left end is a water outlet 12, and the upper end connects the valve body 14 that leaks, main valve body 13 and the setting that leaks between the valve body 14 through hole 15 that leaks.Water inlet with in let out control unit and be arranged in the main valve body 13; Wherein, Cross the annular stop sheet 212 that water support 21 has the water pond 211 excessively of vertical main valve body 13 inwalls and was formed at water pond 211 right sides; Cross water pond 211 outer rims and be connected, cross on the water pond 211 and offer water passage hole 213 with main valve body 13 inner threads.
Water inlet sealing gasket 24 is arranged on its right end face of sealing gasket support 23; Sealing gasket support 23 and water inlet sealing gasket 24 were arranged between water support 21 and the water intake 11 movably; The ends restrict water inlet sealing gasket support 23 of annular stop sheet 212 is the scope of activity left; Water intake 11 is provided with seal boss 111 in main valve body 13, this boss 111 is controlled the keying of intaking with water inlet sealing gasket 24.Water inlet check spring 22 is awl cross section helical spring, and the one of which end is arranged in the inside groove of annular stop sheet 212, and the other end is replaced sealing gasket support 23.In let out thimble 25 and have thimble cap 251 and thimble rod 252; In having, its thimble cap 251 colludes sealing edge 253; Thimble rod 252 is located in the center hole of sealing gasket support 23 and water inlet sealing gasket 24, and thimble cap 251 is positioned at into water sealing gasket 24 right sides, in collude sealing edge 253 towards water inlet sealing gasket 24.Thimble rod 252 is provided with spring card slot, and interior pressure release power spring 26 is set on the thimble rod 252, and the one of which end snaps in said draw-in groove, and the other end is replaced into water sealing gasket support 23 left end face.
The main body of control unit except that handle 33 that leak is arranged in the valve body 14 that leaks; Piston rod support 31 outer rims are fixedly installed on the open upper end place of the valve body 14 that leaks, and central authorities offer piston hole, and piston rod 32 is located in this piston hole; Piston rod 32 upper ends are connected with handle 33; The lower end is connected with the sealing gasket support 37 that leaks, and the sealing gasket 38 that leaks is arranged on sealing gasket support 37 lower end surfaces of leaking, and leak sealing gasket 38 and the through hole 15 that leaks mentioned above are controlled the keying of the passage that leaks.First clamping cap 34 and second clamping cap 35 are positioned at piston rod support 31 belows, and sealing gasket support 37 tops of leaking are connected with valve body 14 inner threads that leak respectively.The pressure spring 36 that leaks is awl cross section helical spring, and second clamping cap 35 is replaced in its upper end, and the sealing gasket support 37 that leaks is replaced in the lower end.Offer outer drain port 16 on second clamping cap 35 and the valve body 14 that leaks between the sealing gasket support 37 of leaking.
The working principle of the safety valve that the foregoing description provides is: when normally intaking; Water supply overcomes the into resistance of water check spring 22 from water intake 11; Back down sealing gasket support 23 and water inlet sealing gasket 24 left, open intake tunnel, via main valve body 13 inner chambers; Arrive water outlet 12 at last, supply with water heater.When the water heater normal heating; Its pressure inside slowly raises; When water heater internal pressure (being water outlet 12 place's pressure) during greater than water intake 11 pressure, reverse hydraulic pressure acts on thimble 25, in overcoming behind the resistance of pressure release power spring 26; Back down thimble 25 to the right, the inner unnecessary pressure flow of water heater is back into 11 places, the mouth of a river; When reverse hydraulic pressure during less than the resistance of interior pressure release power spring 26, in let out assembly and close, separate hot and cold water.If it is too fast to heat in water heater inside; In when letting out assembly and can not release unnecessary pressure fully; Reverse hydraulic pressure sharply rises and meets or exceeds when leaking pressure spring 36 resistances; The sealing gasket 38 that leaks is upwards backed down with the sealing gasket support 37 that leaks, and the assembly that leaks this moment also is opened, and the unnecessary pressure of part is released through outer drain port 16.In addition, when forcing outer pressure release,, make the sealing gasket 38 that leaks upwards opened, open the passage that leaks with the sealing gasket support 37 that leaks through manual operation handle 33.
Continuation at said inboard or the arranged outside filter screen 27 of crossing the annular stop sheet 212 of water support 21, so that magazine can directly not get into the control unit that leaks, guarantees the working life of safety valve referring to Fig. 2.In addition, as shown in Figure 3, in the present embodiment, be in the 0.2mm with the divulge a secret boss height restriction of packing 38 of the sealing seat outward that leaks at through hole 15 places of leaking, make each decrement limited, thus the working life of having improved sealing gasket greatly.
Above embodiment is merely fully open and unrestricted the utility model, based on the expansion that replacement, same characteristic features are counted out that is equal to without creative work of the utility model creation purport, all should belong to the scope of the utility model exposure.
Claims (5)
1. electric water heater safety valve, comprise valve body, water inlet and in let out control unit, control unit leaks; Valve body comprises the water intake on main valve body, main valve body right side, the water outlet in left side and the valve body that leaks of upper end, and main valve body is communicated with through the through hole that leaks between valve body with leaking, water inlet with in let out control unit and be arranged in the main valve body; The control unit that leaks comprises piston rod support, piston rod, handle, the pressure spring that leaks, the sealing gasket support and the sealing gasket that leaks leak; Piston rod support outer rim is fixedly installed on the open upper end place of the valve body that leaks; Piston rod is located in the piston hole of piston rod support, and the piston rod upper end is connected with handle, and the lower end is connected with the sealing gasket support that leaks; The sealing gasket that leaks is arranged on the sealing gasket support lower end surface of leaking, and the sealing gasket that leaks is relative with the said through hole that leaks; It is characterized in that: the control unit that leaks also comprises first clamping cap and second clamping cap; Be positioned at above piston rod support below, the sealing gasket support that leaks; Be threaded with the valve interior wall that leaks respectively; Second clamping cap is replaced in the said pressure spring upper end of leaking, and the sealing gasket support that leaks is replaced in the lower end, offers outer drain port on second clamping cap and the valve body that leaks between the sealing gasket support of leaking.
2. electric water heater safety valve according to claim 1 is characterized in that: the said pressure spring that leaks is awl cross section helical spring.
3. electric water heater safety valve according to claim 1 and 2 is characterized in that: the divulge a secret boss height restriction of packing of the sealing seat outward that leaks of the said through hole of leaking is in the 0.2mm.
4. electric water heater safety valve according to claim 1; It is characterized in that: said water inlet with in let out control unit comprised water support, water inlet check spring, water inlet sealing gasket support, water inlet sealing gasket, in let out thimble and in pressure release power spring; Cross the annular stop sheet of crossing water pond and right side that the water support has vertical main valve body inwall; Cross the water pond outer rim and be connected, cross on the water pond and offer water passage hole with the main valve body inner thread; The water inlet sealing gasket is arranged on its right end face of sealing gasket support; Sealing gasket support and water inlet sealing gasket were arranged between water support and the water intake movably; The movable left scope of ends restrict water inlet sealing gasket support of annular stop sheet; Water intake is provided with seal boss in main valve body, water inlet check spring one end is arranged in the inside groove of annular stop sheet, and the other end is replaced the sealing gasket support; In let out thimble and have thimble cap and thimble rod, collude sealing edge in its thimble cap has, thimble rod is located in the center hole of sealing gasket support and water inlet sealing gasket, the thimble cap is positioned at into water sealing gasket right side, in collude sealing edge towards the water inlet sealing gasket; Thimble rod is provided with spring card slot, and interior pressure release power spring housing is located on the thimble rod, and the one of which end snaps in said draw-in groove, and the other end is replaced into water sealing gasket support left end face.
5. electric water heater safety valve according to claim 4 is characterized in that: said water inlet with in let out control unit and also comprise filter screen, be arranged on a side of annular stop sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203888810U CN202302146U (en) | 2011-09-30 | 2011-09-30 | Safety valve for electric water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203888810U CN202302146U (en) | 2011-09-30 | 2011-09-30 | Safety valve for electric water heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202302146U true CN202302146U (en) | 2012-07-04 |
Family
ID=46371042
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203888810U Expired - Lifetime CN202302146U (en) | 2011-09-30 | 2011-09-30 | Safety valve for electric water heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202302146U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114267921A (en) * | 2021-12-07 | 2022-04-01 | 蜂巢能源科技股份有限公司 | Explosion-proof valve, battery pack and power device |
| CN116519235A (en) * | 2023-05-29 | 2023-08-01 | 佛山市顺德区佰旺金属制品有限公司 | Water heater relief valve and gas tightness check out test set thereof |
-
2011
- 2011-09-30 CN CN2011203888810U patent/CN202302146U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114267921A (en) * | 2021-12-07 | 2022-04-01 | 蜂巢能源科技股份有限公司 | Explosion-proof valve, battery pack and power device |
| CN116519235A (en) * | 2023-05-29 | 2023-08-01 | 佛山市顺德区佰旺金属制品有限公司 | Water heater relief valve and gas tightness check out test set thereof |
| CN116519235B (en) * | 2023-05-29 | 2023-11-14 | 佛山市顺德区佰旺金属制品有限公司 | Water heater relief valve and gas tightness check out test set thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20200903 Granted publication date: 20120704 |
|
| PP01 | Preservation of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120704 |
|
| CX01 | Expiry of patent term |